Agricultural machinery rental is a new service form that uses big data in agriculture to improve the utilization rate of agricultural and promote development economy. To realize scheduling optimization cloud services, dynamic artificial bee-ant colony algorithm (DABAA) proposed solve above problem. First, practicability mathematical model production, coefficient proposed. Then mutation operatio...

In an industrial environment, a large part of the solutions used in machine parks is based on rotating systems. Therefore, branches diagnostics this area are subjected to extensive research so that they effect with more and new solutions. This article presents problem selected most common faults low-speed machinery environment. Presented chapters define concept symptoms its goals. Selected issu...

Compared to opencut mining, underground coal mining is more common in Australia due to its lesser impact on the environment. Although there are several underground mining methods, such as the longwall, pillar, bord, and miniwall, longwall mining is the most commonly used method due to its high efficiency. However, longwall mining does lead to significant ground subsidence. Mining subsidence is ...

With the rapid development of world economic construction and shortage energy, it has become a hot research issue to realize electrification vehicle driving system improve energy efficiency. Most electric machinery power systems are characterized by low speed high load. The coordinated multiple motors can increase output torque transmission efficiency machine on basis compact layout. A novel co...

Land leveling is one of the most important steps in soil preparation and cultivation. Although land leveling with machines requires considerable amount of energy, it delivers a suitable surface slope with minimal soil deterioration as well as damage to plants and other organisms in the soil. Notwithstanding, in recent years researchers have tried to reduce fossil fuel consumption and its delete...

The measurement of phase is essential in the balancing of singleor multi-plane balancing of rotating machinery. The rate of change of phase is important, as it may indicate the presence of a critical speed, and from the rate of change of phase one may be able to deduce the amplification factor or log decrement of a particular mode. Having a phase reference mark is particularly critical on compl...

The results of numerical and experimental research conducted in the Laboratory for Hydraulic Machinery Construction Peter Great St. Petersburg Polytechnic University are presented. is aimed at studying effects an impeller radial clearance rim on energy characteristic low-pressure axial pumps specific speed ns≈600. It shown that these design features a flow duct have significant stage parameters...